Steam-jacketed still



Aug. 16, 1927. ,639, 89 W. KNAPP STEAM JACKETED STILL Filed April 23, 1925 2 Sheets-Sheet 2 INVEN TOR.

A TTORNEYS.

Patented Aug. 16,1927.

UNITED STATES I 1,639,189 PATENT GFFICE.

7 WILLIAM KNAPP, OF OHANUTE, KANSAS.

STEAM-JAGKETED STILL.

Application filed April 23, 1925. Serial No. 25,819.

This invention relates to a steam jacketed still, and has for its object the construction of a comparatively simple, yet eflicient, stlll for making bright stock or heavy lubricating oils, from crank case or heavy crude OllS.

With the foregoing and other objects 1n view, my invention comprises certain novel combinations, constructions and arrangements of parts, as will be hereinafter de scribed, illustrated in the accompanying drawings, and more particularly pointed out in the appended claims.

In the drawings:

Figure 1 is a View in side elevation of a still constructed in accordancewith the present invention, the lower part of which still being shown in longitudinal section.

Figure 2 is a sectional view taken on l ne 2, 2, Figure 1, and looking in the direction of the arrows.

Figure 3 is a perspectiveview of the acket shell with the end closures attached thereto.

Figure 4 is a view inside elevation of one of the split-ring-like end closures.

Referring to the drawings by numerals, 1 designates the foundation or support for the still. The still comprises the cylindrical shell 2 upon which is mounted the spl t jacket shell 3. The cylindrical shell 2 1s provided with a cleaning device 4, a palr of domes 5, 5, and in communication with the domes 5 is a vapor line 6 that passes through the cooler box 7 The cylindrical shell 2 is left free and unobstructed at its ends; that is to say, the jacket shell 3 does not enclose the ends of shell 2. A man hole 8 is formed on one of the ends of the shell,2 and, preferably, on the opposite end is a gauge glass 9 and a charge and discharge llne 10. The oper ating means 11, for cleaning device 4, extends through one of the ends of the st1ll. If there was a jacket over the ends of the shell 2, this end closing would increase the cost of construction, not only in the added material used for forming the jacket 3, but also in running through such end structure, the man hole, gauge glass, pipe lines, etc. I make mention of the peculiar structure of my jacket shell to emphasize the fact that tions in a pair of flat inner flanges 12, which in turn terminate, at their outer edges in outer flanges 13 that are riveted tightly against the outer surface of the cylindrical shell 2, as shown in Figures 1 and 2. v

To close the compartment 14, formed between the shell 2 and shell 3, I provide splitring like or subtsantially U-shaped end closures 15. The upper ends of each end closure 15 are bevelled, as at 16, and these bevelled ends 16 fit snug against the inner faces of the inner flanges 12. The shell 3, end closures l5, and shell 2 are welded together, in any suitable manner for making a tight closure.

The still is provided with a top manhole 8 and to top discharge line 10*.

A superheated steam inlet 17 provides means for allowing steam to enter compartment 14 and a superheated steam outlet 18, furnishes the means for allowing the steam to pass out of said compartment, as the operator desires.

While I have described the preferred embodiment of my invention, and have illus trated the same in the accompanying drawings, certain minor changes oralterations may appear to one skilled in the art to which this invention relates during the extensive manufacture of the same, and I, therefore, reserve the right to make such alterations or changes as shall fairly fall within the scope of the appended claims.

What I claim is:

1. In a steam jacketed still, the combination of a cylindrical shell. provided with ends, a split jacket shell provided with flanged upper edges and open ends positioned partly around the sides of said cylindrical shell, said flanged upper edges secured only to the sides of said cylindrical shell, said cylindrical shell and jacket shell producing a compartment therebetween, end closures fastened to the ends of said jacket shell and to said cylindrical shell at its ends leaving the ends of said cylindrical shell unobstructed, and inlet and outlet steam lines connected directly to said end closures and in communication with said compartment.

2. In a steam jacketed still, the combination with a shell, of a split jacket shell. provided with open ends and with flat inner horizontally and longitudinall extending flanges on its split portion, sai flanges terminating at their outer horizontally and longitudinally extending'edges in outer flanges,

means'securing the outer flangesto the sides of said first mentioned shell, substantially U-shaped end closures at the ends of said jacket shell and against said first mentioned shell, said end closures having their ends fitting snug against the inner faces of said fiat inner flanges, and inlet and outlet steam lines connected to said end closures.

3. In a steam jacketedstill, the combination of a cylindrical shell, a split jacket shell provided with open ends and partly around said cylindrical shell, said jacket shell provided With longitudinally extending fiat.

inner flanges and with outer flanges, said outer flanges secured only against the sides of said cylindrical shell, substantially U- shaped end closures within said jacket shell and positioned at its ends, said end closures having their ends bevelled and resting snugly against the inner faces of said flat inner flanges, the inner edges of said substantially U-shaped end closures being secured tightly against said cylindrical shell, and inlet and outlet steam lines connected to' said end closures.

*4. In a steam jacketed still, the combination with a shell provided with ends, of a split jacket shell secured at its upper hori zontal edges only to the sides of said shell and, terminating at the ends of said first mentioned shell, said first mentioned shell having its ends unenclosed, said first mentioned shell and jacket shell producing a compartment, end closures around the first mentioned shell and arranged in vertical planes and secured to the ends of the jacket shell for closing said compartment, and means for supplying superheated steam to and allowing said steam to be discharged from said compartment.

In testimony whereof I hereunto afiix my signature.

WILLIAM KNAPP. 

